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Finding the Fourth Proportional to 43,687.28, 65,530.92 and 10,855.28

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Solution

The fourth proportional to 43,687.28, 65,530.92 and 10,855.28 is: 16,282.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,687.28 : 65,530.92 = 10,855.28 : x
  2. Step 2: Convert to fraction form
    43,687.28/65,530.92 = 10,855.28/x
  3. Step 3: Cross multiply
    43,687.28x = 65,530.92 × 10,855.28
  4. Step 4: Simplify right side
    43,687.28x = 711,356,485.26
  5. Step 5: Solve for x
    x = 711,356,485.26/43,687.28
  6. Step 6: Final answer
    x = 16,282.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.